Fastener-inserting mechanism



06f. 27, 1931. W R, BARGLAY E1- Al; 1,829,389

FSTENER INSERTING MECHANISM Filed July 23. 1927 atentecl Geit. 27, 1931 Urrea STATES PATENT FFCE WILLAM RODERICK IBARCLAY AND WILLIAM THOMAS BUCKING'HAM ROBERTS, OF LEICESTER, ENGLAND, ASSIGNORS T0 UN'IED SHOE MACHINERY CORPORATON, OF PATERSON, NEW JERSEY, A CORPORATION 0F NEW' JERSEY FASTENER-NSERTING MECHANISM Application led July 23, 192.7, Serial No. 268,009, and in Great Britain September 3, 1926.

This invention relates to fastener-inserting mechanisms and is particularly concerned with the driving ofv heel-attaching nails in the manufacture of shoes, especially where the heels are to be attached from inside the shoes and are oi the Louis type.

` ln attaching such a heel, it is desirable that the nails 'shall enter as closely as possible to the edge oi the heel to obtain a tight randcrease. rit the same time, the points of the nails must not pass through the side walls of the heel. rfhe present invention has for one or" its objects the attainment oi these results. L his is accomplished by providing novel means for causing such heel-attaching nails, as they are being driven, to be bent or curved, preferably toward each other and toward the center of the heel. Simultaneously with this, an attaching nail may, if desired, be driven vinto the heel alonga recti* linear path.

The above and other objects and the features of the present invention 'will become evident from a consideration of the following purely illustrative description and accompanying drawings of a particular form of nail-driving mechanism according to the invention. v

ln the drawings,

' 1 is a section on 'the line 1 1 of Fig. 2, showing one form of our improved -naildriving mechanism; Y `Fig.- 2 is a plan view of said mechanism; and

Fig. 3 is a side elevation of the upper portion of the mechanism.

This nail-driving mechanism comprises a post 1 ci a work-.supporting jack adapted for use in a heel-attaching machine of the character described, for eXample,.in Letters Patent of the United States No. 1,545,575, Standish, July 14, 1925. The post has slidingly mounted in it a vertically movable plunger 2, which is urOed downwardly by a compression-spring 3 located in a recess formed in the plunger, and which bears against the bottom oi said recess and against a screw 4 threaded into the post and projecting into the recess. The plunger 2, at its upper end, is provided withacircular head 5, to thewtop face of which is fixed a circular plate 6 having spaced from one another, near its edge, live openings, which are recessed on the under side of the plate. Each opening in the plate receives a nail-driver 7, the head of which enters the corresponding recess and is supported by the upper tace of the head of the plunger. The head oi each driver, where it rests upon the plunger-head, is rounded, and the recesses in the plate are somewhat larger than the drivers, so the latter are free to swing about their lower ends slightly in any direction from a vertical position. rhe upper ends oi' this series oit outer drivers are guidedin vertical spaces between the side walls oil a series of live blocks 8, which are fined in the upper end of a tube 9 enclosing the drivers, the lower end of the tube being secured to the post 1. At the top oi' the tube is a nail-bending ring 10, the upper inner edge ot which has an inwardlv extending lange, with its under tace 11 beveled upwardly and inwardly at an angle, which is shown as about forty-five degrees. The top edges of the live blocks are beveled to tit against the flange.

Pivoted on horizontal pins 12 at the lower ends of the blocks are driver-passage-forming and nail-bending fingers 13, which extend upwardly in each space between the blocks nearly to their tops on the inner side of the drivers. These lingers are all urged inward ly toward each other by a coil-spring 1li surrounding the lingers, just above their pivots, and retained in a groove 15 extending about the blocks. rlhe outer faces of the lingers 13, which are grooved vertically, the sides oi the spaces between the blocks 8, and the inner faces or" the tube 9 and ring l() furnish driverpassages. These passages, at their upper ends, are loverhung or partly closed by the beveled lower face 11 on the ring 10, i'orming constricted nail-bending outlet portions, this unitary member or ring 10 being common to all the passages. The upper ends of the driver-passages are opened to receive the nails when the fingers are swung inwardly by the spring 14. Slidngly mounted at the center of' the blocks and in the plunger 2 is a vertical finger-controlling tube 16 having fixed to its lower end a block 17. This block is movable in a recessin the plunger and, during the descent of said plunger, 1s .en. gaged by the upper wall of the recess to shlft the tube downwardly. During the elevation of the plunger, the tube 16 is moved with 1t 'bv the en a ement of a screw 18 verticall J g g 1 ]ections. c t The tube'16 may'have vslidingly mounted within it, near the vertical axis of the Jack, a driver 21, which, .atfitslower end, rests on thehead of the screw '518. "The bore 'inthe tube, at its upper end, is enlarged toreceive a.

nail-guiding tube 22, fThe'latter Ahas at its upper extremitya thinhead 23, which rests Hon fthe tops ofthe fbloks f8 and held ,in position by aw lcircular plate '2 4 havin-g a central beveled opening to engage the'beveled c edge foffthehead 23. 'Theplate 24'has also af'bev'eled outer edge, over which extends the beveledl lange ofthe Anail-bending ring "10. Theplate is provided with five slots'2 5 ex# tending inwardly from'its edgeto permit the passage'of. nails, a pin 26 inthe .plate enter-v 1- ingA a holein the top of one lofthe blocks to position the slotsever thena'I-passages.y A"The nail-bendingringl 1.0 has a flange'27', which'is engagedby a flan e 28 overhangmg the bore of Va shoe-supportmgblock .Qrfjackl Y top V29. v This bloc'liis fixed to the tube'QIby conical-pointed ,screws 30, whichrenter 'conical `holes 'in l the, side ofthe tube. Th'e'jscrews and holes" are 'so arranged that/,s vwhen the screws are turned/,'inwa'rdlthe shoegsupport'- i ingfblock'29 is drawn'downjto ,clamp the ring 10 between the iiange '28,.onthelbloek andthe topv of the tube 9.1" AThe' shoe-supporting block 29k has at each side Aa slot,wh1ch ex# poses aportin ofthe outerface'oftheflange 27 onrthe ring. l"Inthis ifaceiarefformed a Y number cf yvertical vgrooves r,32, Iso that, when the ring is loosenedby slackeningjthe clampv ing screwsBO, a tool maybeinserted'jthrough one or'theother ofthe slots'intoengagement with a groove in the-flange,y and the ring may thereby be rotated Vto bringjfresh wearing ytionrforl bending'the nails.l y Y' 'In operation, Vthe heel-'attaching machine stops at: a point in its cyclewhen'thejplunger 2 is descending and'thehead 419-of^the {ingerportions'of/the surface o'fitsflangejintoposi- Y .controllingjtube 1'6jis 'stillaabove the projections @20 on lthe fingers 13, so the ngers are t swung in; towardfeach otherbythepring V'14',

and Y the upper 'ends of the l'outer L :drivere'pasf' cevethefsucceeding loadfofrnails.

sages are therefore open. Heel-attaching' nails are at this time inserted heads down in the desired driver-passages, either by hand or by arsuitable loading mechanism. Y Then a shoefand a' heel to-be attached are,k positioned on the block 29,l and the machine is started. The plunger. first moves down, and, by en- Vg vementiwith` thelblo cli; i17,-.the head of.' the :linger-controlling tube? 16. -is broughtk intocontact awith theA projections L `on .the lfingers to Y spread these out and hold them positively in this'position :The upper. ends of the outer driver-passages are thus so contracted that AVAthere is Vjust room Dfor'the `Shanks o'ftthe nails to pass out. between 4the upper. ends of the linger-sand. thefacell on thelange of the ben d-y ingring. V.'lhejplunger2,is now moved up, and,during .the y greater part of .this travel, the finger-controlling .tube 16 is stationary; owing to the space betweenw.y the lower ,end Aof said tube and .thelscrew 18 in theplunger, and the outlet-,openings of the driverfpassages remain` nearlyclosed. During the "upward movement sof the; plunger, the. nails arev` driven irl-tothe shoe, and, because oftheinwardly inclined constr-ieted passages 4between `.the ring and the upper ends of the fingers theouter nailslfare all positively bent, their form bev ing Achanged before theiri pointsemerge Vfrom thepassages, and follow curved paths, toward each other andtoward Vthelongitudinal axis ofthegpest.. Just before thefplungerreaches .the topV Qffits strole,thefscrew,18 engages'thebetteln of thegingencontrolling tube 16, and, during the last part of the upward movement oft-hey plungen-jtheftuhe;israisedffand its head 191liftedabovetheprojections 20- on the fingers. This allows .thespring 154:v to,A swing the fingers in( to; openthe driverfpassages, so that interference with they heads-,of the nails is avoided..` The: :upper ends :of the drivers, during the last part of their elevatiomenga the face 1.1 and swing slightly-about their lowerrenfds.V `The plungert2fthendescends to its' ,stopping gfposition, leaving -the tube 16 raisedV and the 'driver-passa'gesiropento rev VThe-cen-k ter nail is driven into the heel at the sameV time as` the outer'nail`s,;followinga `rectilinear path. If it is not desiredfto,driveraicenter nail, Y it. `fis, `only fneeessary' to :withdraw the driver;-21, .which mayirea'dily'be lifted;- out of its guide. andi-will: then-,not mark'the shoe. s 'Havingldescri'bed `our invention, Vwhat we cla-im as vnew and,J desire ito secure" by-Letters Patent ofrthe VUnited,"Statestis ,1..1In at fastener-,inserting mechanism, fasten er-driving means, a movable: member L furf nishing a wall offa passage .for the :driving ymeans at the point ofrem'ergence. offthe fas"- teners from `saidpassageand means .acting dnringth'e movement Vofthe drivingY means fore-hangingthepositionofthe member.

f l'2. 'In 4alfastener-insertingnnechanism, fas; 1

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tener-driving means, a movable member arranged to bend a fastener While it is being driven and before its contact with the Work, and a controlling member for the bending member movable by the driving means.

3. In a fastener-inserting mechanism, fastener-driving means, a movable member furnishing a portion of a fastener-bending passage, and a controlling member for the member first mentioned into contact with which controlling member the driving means moves near its extremes of travel.

4. In a fastener-inserting mechanism, fastener-driving means, a movable member arranged to bend a fastener, means arranged to normally hold the member out of bending position, means operable with the fastenerdriving means for releasing the bending member from the holding means, and means for moving the member into bending position.

5. The combination With a Work-support having a passage, of a fastener-driver movable therein, a normally fixed member having an inclined surface overhanging the outlet of the passage, and a member movable to- Ward and from the inclined surface and furnishing the opposite side of the passage.

6. The combination with a Work-support having a passage, of a fastener-driver movable therein, a normally fixed member having an inclined surface overhanging the outlet of the passage, a member movable toward and from the inclined surface and furnishing the opposite side of the passage, and means movable with the driver for moving the passageforming member.

7. The combination with a Work-support having a passage, of a fastener-driver movable therein, a. movable member furnishing one side of the passage, and a member movable under the influence of the driver and contacting with the passage-forming member to change the Width of the passage during the insertion of fasteners.

8. The combination With a Work-support having passages, of a nail-bending finger pivoted at one side of each passage, a plunger carrying drivers operating in the passages, and a sleeve movable by the plunger and contacting with the lingers.

9. The combination with a Work-support having passages, of a nail-bending nger pivoted at the inner side of each passage, a spring acting upon the fingers and tending to draiv them together, a plunger carrying drivers operating in the passages, and a sleeve movable by the plunger and contacting with the fingers to separate them.

l0. The combination With a Work-support having passages, of a nail-bending finger pivoted at one side of each passage, a bending ring having an inclined surface overhanging the ends of the fingers, a. plunger carrying drivers operating in the passages,

and a sleeve movable by the plunger and contacting with the fingers.

ll. InV combination, a jack having a series of nail-receiving passages, a driver movable in eachv passage, and means arranged to change the" form of the nails by bending them toward the longitudinal axis of the jack While they are being driven and before their leading extremities emerge from the passages.

l2. A jack having a series of nail-receiving passages With constricted outlet-openings, a driver movable in each passage, and means arranged to increase the Width of the outlet-openings as the drivers approach them.

13. A jack having a series of nail-receiving passages Vwith constricted outlet-openings, a driver movable in each passage, and means arranged to increase the width of the outlet-openings as the drivers approach them and to maintain said increased Width after the completion of the driving stroke.

14. A jaclr having a series of nail-receiving passages with constricted outlet-openings, a driver movable in each passage, and a mem- ^,-er movable with the drivers and arranged to control the Width of the outlet-openings.

l5. In combination, a jack provided With an opening, a bending ring surrounding the opening, movable members cooperating with the ring to form nail-receiving passages, and drivers operating in the passages.

16. In combination, a jack provided With an opening, a bending ring surrounding the opening, movable members cooperating with the ring to form nail-receiving passages, drivers operating in the passages, and means for moving the members under the influence of the drivers.

17. In combination, a jack having an opening, a bending ring surrounding the opening and furnishing a portion of nail-bending passages, and retaining means for the ring organized to permit said ring to be rotated to present fresh Wearing surfaces to the passages.

18. In combination, a jack, a jack-top carried thereby, a nail-bending member with which the top contacts, and means arranged to draw the top into clamping engagement with the bending member or to release said member for adjustment.

19. In combination, a jack, a series of drivers operating therein, and means associated With certain of the drivers for causing driven fasteners to follow curved paths, one of the drivers being arranged to insert its fastener along a rectilinear path.

20. In combination, a jack, a driver situated in proximity to the axis of the jack, a series of drivers surrounding the axial driver, and a bending device associated with @Fach of the surrounding drivers and arranged to defleet nails driven, towardthe axis of the jack.

2l. In a machine for inserting headed fasteners, avwor-k-supporthaving., a fastener'- recelvlng passage, fastener-drlvmgmeans operating nthe passage,fastener-bending' means associated with the passage, and means for lncyreaslng the Wldth ofthepassage' as the head of the fastener approaches the beni'ng mea-ns.

yIn testmonyfwhereof We have signed our names to this specification.. 4 A WILLlAM RODERICK BARCLAY. l

WILLIAM THOMAS BUCKlNGl-IAM- ROBERTS.

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